Triarylbismuth-copper acetate

AU these authors proposed that the mechanism bears some similarity to the copper-mediated arylation of amines from triarylbismuth compounds, described by Barton et al. [273]. Thus, the reaction would proceed via the formation of a cupric acetate complex with the nucleophile followed by a transmetallatimi with arylboronic acid playing the role of the triarylbismuth, before affording the N-arylated compound by reductive elimination. This last step would be facilitated by prior oxidation by dioxygene of a copper II intermediate to a copper IB intermediate [266-270, 274]. Some authors reported that the addition of molecular... 

---